139. Solving a chemistry problem

13. When analyzing the technical product for the content of H2O2 by the chemiluminescent method, a sample weighing m g was dissolved in 100.0 ml, and 0.20 ml of the test and standard solutions were taken into the cells of the cuvette. The cuvette was placed in a holder with a photographic plate and a mixture of an alkaline solution of luminol and copper sulfate was added to each cell. The plate was photometric on an MF-2. ∆S values ​​for four standard solutions containing 0.4; 0.6; 0.8 and 1.0 μg H2O2, were 0.35; 0.55;
0.77 and 1.00, respectively.
Calculate the mass fraction (%) of hydrogen peroxide in the sample according to the following data:
Option 1
m, g 1.010
∆S. 0.50